Senior Flex H/A

 The Original #1 Senior Joint Support Plus H/A! 



  • Brand: MVP Med-Vet Pharmaceuticals
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The Original #1 Senior Joint Support Plus H/A! 


Senior Flex is a unique combination of support for the senior horse!  Contains hyaluronic acid, glucosamine, chondroitin Sulfate, MSM, yucca and Ester-C to support healthy joint function.  Direct fed microbials (probioitics) to help support digestive function.

Provides (Per serving):  5,000 mg glucosamine; 50 mg hyaluronic acid; 500 mg chondroitin sulfate; 5,000 mg MSM; 1,200 mg Ester-C; 5,500 mg Yucca; plus probiotics, vitamins A,D and E.  

(Excludes Sand-Free)

The map below indicates ground transit time via Fed Ex. All orders placed before 3:00 p.m. CST will be shipped the same day.  ALL orders placed Friday (after 3PM)/Saturday/Sunday will be shipped the following Monday.


Orders placed over the weekend (Friday after 3PM/Saturday/Sunday) will be shipped the following Monday.  All vaccines orders are shipped to be received within the same week (ie. Any order placed Wednesday (after 3 p.m. CST), Thursday or Friday to ship 2 day air, we will hold your order to ship on the following Monday).  No vaccines will be shipped on a Friday.

We strongly recommend ALL vaccine orders be shipped 2nd day or Next day air. Vaccines not shipped in this manner are non-returnable/non-refundable.  All vaccine orders are shipped in a bio-cooler with ice ice packs.  

2-DAY AIR:  $22.00
Next Day Air:  $35.00

NOTE  Express order delivery time:  Example:  2 day air (2 business days) - if your order ships on Monday, you will receive it Wednesday.  Air shipping Flat Rates apply to FedEx service only.  Vaccines are not shipped on Fridays - NO Saturday express deliveries unless requested (additional express charges will apply).

WEATHER DELAYS:  We are not able to reimburse air charges due to inclement weather that is not in our control.



Unless item is designated "FOB", or marked "Freight Charges Apply" shipping by ground service is FREE within the contiguous 48 states (Fed Ex ground or SpeeDee only).

 MVP supplements ship FREE (Exlcuding Sand Free).

If shipping to a commercial address: Your package will be delivered during the work week (Monday through Friday).

WHEN ORDERING REMEMBER $35.00 minimum order necessary for shipment.
$35.00 - $75.00 order add $6.95 handling.
ALL products marked FOB (Freight On Board) OR Freight Charges Apply - will incur a freight charge.







National Animal Supplement Council (NASC), an industry group dedicated to protecting and enhancing the health of companion animals and horses throughout the United States. Founded in 2001, NASC Members are industry participants and other stakeholders of the finest animal supplements who are committed to the highest current standards of quality in the industry today.

The Council's overriding goal is to promote the health and well-being of non-human food chain animals that are given nutritional supplements by their owners, and to protect and enhance the integrity of the animal supplements industry.

The cornerstone of NASC's mission is to work cooperatively with state, federal, and international governmental officials to create a legislative and regulatory environment that provides a framework that is Fair, Reasonable, Responsible and Nationally Consistent.

Such an environment of safety, accuracy and quality serves the interests of NASC's members by ensuring that ethical manufacturing and labeling practices are complied with throughout the industry.

NASC Seal of Quality…

As part of its ongoing effort to improve and standardize the animal supplement industry, NASC initiated its Quality Seal Program. The Seal is a way for consumers to know that when they buy a product, they buy from a reputable manufacturer that has successfully completed a facility audit. Different from the NASC logo, the Seal is a privilege for members to use on their products and signifies that the company has been audited for the implementation of specific standards. Members must agree to adhere to NASC’s quality standards, part of which includes submitting to an independent audit to ensure conformance with quality system requirements.



SKU:  Size FOB Cost/Serving Price Quantity
64721370 5lb (80 servings) Foil Bag Ships FREE $1.29 $102.90
64721374 10lb (160 servings) Foil Bag Ships FREE $1.23 $196.50
64721378 20lb (320servings) Bucket Ships FREE $1.15 $368.00

Product Ratings and Reviews

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4.8 out of 4.8 stars
  • Bailey
  • ,
  • Friday, March 10, 2017
Both effective and affordable!
  • Ginga
  • Whitehouse, TX
  • Friday, September 4, 2015
I first bought this for a young, pregnant mare with a joint injury. I liked the ingredients and the fact it has no Devil's Claw. The mare did very well throughout the winter during her pregnancy. I then began using it on my 18 y.o. OTTB and she stayed happy all winter. She does not do as well when off this supplement. I have since began giving it to an 18 y.o. mare with ringbone and she is moving better. I have had very satifactory results with this product. None of my horses refuse to eat it. Great product at a reasonable price!
  • Tracy
  • Frankfort, IL
  • Sunday, July 5, 2015
In March I switched my horses joint support supplement from a daily prepacked companies product to Senior Flex HA. My horse is one of the pickiest eaters I have ever met and he readily eats this supplement. I love the fact that there are probiotics, added vitamins, and great levels of glucosamine, chondroitin, hyaluronic acid, and MSM. Overall, this is a great joint health product!
  • Kristen
  • Blue Mound, KS
  • Tuesday, June 2, 2015
I have been using this product on my horse for years now and am very pleased with the results. My mare is 25 years old and I still compete competitively on her. Would recommend this product to help maintain older horses
  • Kristy
  • Lawton, MI
  • Wednesday, September 12, 2012
I have used this product in the past, I have tried different products, This product has me coming back, due to price and results I see in my 12 yr old AQHA horses. Im very happy with this product and will continue.